To interfere with or tamper with something, especially when you should not.
"Don't fuck with the server settings unless you know exactly what you're doing."
Vulgar slang meaning to interfere with something, provoke or challenge someone, or deliberately confuse or deceive someone.
To bother or mess with something or someone, or to challenge someone in a dangerous way.
3 meanings, ordered from most common to least. Color-coded by CEFR level.
To interfere with or tamper with something, especially when you should not.
"Don't fuck with the server settings unless you know exactly what you're doing."
To provoke, challenge, or threaten someone, especially someone who is dangerous or powerful.
"I wouldn't fuck with him if I were you — he's connected to some very dangerous people."
To deliberately confuse, deceive, or play psychological games with someone.
"Stop fucking with my head — just tell me the truth."
Always requires an object. Has a range of senses from meddling with objects, to provoking a dangerous person, to deliberately deceiving or manipulating someone. The sense 'don't fuck with me' is a threat implying the speaker is dangerous. Common in American English.
Natural word combinations native speakers use most often.
The five tense forms you'll use most often.
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